@article{Hogerbrugge2009,
author = {Hogerbrugge, M.J. and Dykstra, P.A.},
title= {The family ties of unmarried cohabiting and married persons in the Netherlands},
year = {2009},
doi = {10.1111/j.1741-3737.2008.00585.x},
journal = {Journal of Marriage and Family},
volume = {71},
number = {1},
pages = {135‒145},
}